APA (7e ed.) Bronvermelding

Philippines. National Economic and Development Authority & Philippines. Regional Development Council, Region I. (1985). Regional development profile [of] Ilocos region, CY 1985. National Economic and Development Authority.

Chicago (17e ed.) Bronvermelding

Philippines. National Economic and Development Authority en Region I. Philippines. Regional Development Council. Regional Development Profile [of] Ilocos Region, CY 1985. San Fernando, La Union: National Economic and Development Authority, 1985.

MLA (9e ed.) Bronvermelding

Philippines. National Economic and Development Authority en Region I. Philippines. Regional Development Council. Regional Development Profile [of] Ilocos Region, CY 1985. National Economic and Development Authority, 1985.